57273287 has 8 divisors (see below), whose sum is σ = 58138080. Its totient is φ = 56414880.

The previous prime is 57273283. The next prime is 57273301. The reversal of 57273287 is 78237275.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 57273287 - 2² = 57273283 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57273283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18278 + ... + 21180.

It is an arithmetic number, because the mean of its divisors is an integer number (7267260).

Almost surely, 2^57273287 is an apocalyptic number.

57273287 is a deficient number, since it is larger than the sum of its proper divisors (864793).

57273287 is a wasteful number, since it uses less digits than its factorization.

With its successor (57273288) it forms a Ruth-Aaron pair, since the sum of their distinct prime factors is the same (3193).

57273287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3193.

The product of its digits is 164640, while the sum is 41.

The square root of 57273287 is about 7567.9116670321. The cubic root of 57273287 is about 385.4641885219.

The spelling of 57273287 in words is "fifty-seven million, two hundred seventy-three thousand, two hundred eighty-seven".